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Finding the Fourth Proportional to 98,398.96, 146,830.93 and 87,796.12

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Solution

The fourth proportional to 98,398.96, 146,830.93 and 87,796.12 is: 131,009.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,398.96 : 146,830.93 = 87,796.12 : x
  2. Step 2: Convert to fraction form
    98,398.96/146,830.93 = 87,796.12/x
  3. Step 3: Cross multiply
    98,398.96x = 146,830.93 × 87,796.12
  4. Step 4: Simplify right side
    98,398.96x = 12,891,185,949.99
  5. Step 5: Solve for x
    x = 12,891,185,949.99/98,398.96
  6. Step 6: Final answer
    x = 131,009.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.